摘要
岩石地基相较于软基(土基、砂基等)具有承载力高、压缩模量大的显著特点,但也存在硬度高、施工开挖难度大的缺点。基础设计时,要趋利避害、尽量选择开挖量小、施工方便、形式简单的基础形式。结合工程实例,提出独立基础+防水板的基础形式在岩石地基中取消软垫层的做法,并对设置和不设置软垫层两种做法进行计算对比。结果表明取消防水板下的软垫层,板上荷载传力简单直接,能够显著减小独立基础的尺寸和防水板的配筋量,安全经济,切实可行。
Compared with foundation on softer ground(soil,sand,etc.),foundation on rock has the remarkable characteristics of high bearing capacity and high compression modulus,but it also has the disadvantages of high hardness and difficult excavation in construction.For foundation design,it is necessary to seek the advantage and avoid the harm,and choose simple foundation types that lead to less excavation work and are easier to be constructed.Based on a case project,the method of removing soft cushion layer for the foundation type of spread footing with water-proof slab on rock was put forward.And the calculation and comparison between setting and not setting soft cushion layer were carried out.The results show that when the soft cushion layer under the waterproof plate is removed,the load transfer on the plate is simple and direct,and the size of the independent foundation and the reinforcement amount of the waterproof plate can be significantly reduced.It is safe,economical and feasible.
作者
索小丽
Suo Xiaoli(Shanghai Zhengji Architectural Design Co.Ltd.,Shanghai 200092,China)
出处
《建筑结构》
CSCD
北大核心
2019年第A01期735-737,共3页
Building Structure
关键词
岩石地基
基础形式
独立基础+防水板
软垫层
foundation on rock
foundation type
spread footing with water-proof slab
soft cushion layer
